Piezoelectric cascade resonant lamp-ignition circuit

Details Piezoelectric cascade resonant lamp-ignition circuit Piezoelectric cascade resonant lamp-ignition circuit

2011-03-08

2011-03-08

Le, Don P (Department: 2819)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

C315S244000, C315S318000

Reexamination Certificate

active

07902763

ABSTRACT:
The present invention discloses a piezoelectric cascade resonant lamp-ignition circuit, which uses the intrinsic capacitors of a piezoelectric transformer as piezoelectric capacitors. One lamp is cascaded to one set of the piezoelectric capacitors. Several sets of the piezoelectric capacitors and a resonant inductor are cascaded to form a resonant lamp-ignition circuit. The lamp-ignition circuit of the present invention has advantages of low temperature, small leakage current, high breakdown voltage and high lamp ignition efficiency. When applied to drive several lamps, the present invention uses a fixed frequency to attain a fixed inner impedance of the equivalent circuit of the piezoelectric capacitor. Thereby, the currents of the lamps are balanced to have an identical value.

REFERENCES:
patent: 5886477 (1999-03-01), Honbo et al.
patent: 7436130 (2008-10-01), Komatsu et al.
patent: 2004/0195936 (2004-10-01), Chemisky et al.
patent: 2008/0174251 (2008-07-01), Chen et al.
patent: 2009/0039800 (2009-02-01), Kimura

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